Apparatus for raising and lowering steamboat-chimneys



(No Model.)

J. GHRISTY. APPARATUS FOR RAISING AND LOWERING STEAMBOAT GHIMNEYS.

Patented July 8, 1890.

Nl'lE STATES PATENT JOHN OHRISTY, OF DAYTON, KENTUCKY.

APPARATUS FOR RAISING AND LOWERING STEAM BOAT-CHIMNEYS.

SPECIFICATION forming part of Letters Patent No. 431,87 5, dated July 8,1890.

Application filed April 25,1890. Serial No. 3 .9,98. (No model.)

i To aZZ whom it may concern.-

Be it known that I, JOHN CHRISTY, a citi,

zen of the United States, and a resident of Dayton, in the county ofCampbell and State of Kentucky, have invented certain new and usefulImprovements in Apparatus for Raising and Lowering SteamboatChimneys, ofwhich the following is a specification.

The object of my invention is to provide a substantial device forraising and lowering chimney-stacks on steamboats and for other similaruses, all of which will be fully set forth in the description of theaccompanying drawings, making a part of this specification, in which-Figure 1 is a side elevation, partly in section, of my improvement. Fig.2 is a transverse side elevation of the raising and lowering devices.

1 represents the base of the stack, and 2 the hinged portion.

3 represents a rocker-shoe, to the ears of which is journaled the yoke 4by center 5. Upon the yoke 46 are journaled beveled gears (3 and 7. arepresents hand-cranks for driving said gears. Bevel-gear 6 is securedto the screw-shaft S, which taps into the sleeve 9, which is hinged tothe chimneystack 2. These features are generally shown in Patent No.136,;1-1- granted me March at, 1873.

My present invention consists in the improvement on said patent,which iscon structed as follows:

10 represents braces secured to the sleeve or collar 11, slidinglongitudinally on the sleeve 9, and furnishes a top support for thebraces 10. The lower end of said braces are securely fastened to theyoke l. In Fig. 2 I have shown an additional set of braces 12, which aresecured to the collar 11 at the top and are journalcd upon the centerbolt 5 at the bottom, so as to brace the extensible or telescope shaft 8and sleeve 9. By means of the two sets of braces the section 2 is bracedlaterally in all directions and makes a very firm support. One of saidbraces, however, would brace it in one direction and be a materialimprovement upon my said former device.

It is sometimes desired to use two raising and lowering devices whenthere are two stacks to be raised and lowered at the same time. Theseraising and lowering devices are duplicates of each other and aremade towork in unison by means of the connecting-rod 13, which is hinged to thecollar 11. The braces 10 and 12 are secured together by means of thehoops or rings 14, to which they are respectively riveted.

Mode of operation: In Fig. 1 the chimneystaek 2 is shown to be lowered.When it is desired to raise the same back into position, the cranks aare turned and drive the pinions, which revolves the screw-shaft S,unscrewing the same and raising the sleeve 9, said sleeve movinglongitudinally up through the collar 11. The braces 10 and 12 stiffenthe sleeve 9 and transfer a portion of the strain from said sleevethrough the braces to the rocking yoke at, thereby obviating vibrationson the sleeve and materially strengthening and supporting the same,preventing breaking and twisting of the screwshaft and sleeve, andmaking the same work easy, and at the same time avoiding danger ofbreakage.

Having described my invention, what I claim is 1. The combination, witha hinged section 2, of the extensible shaft 8 and sleeve 9, one workingon the other and pivotally connected with the hinged section, abase-shoe 3, a rocking or oscillating frame 1 on the baseshoe, thebraces 10, secured to said frame and carrying the collar 11, throughwhich the sleeve moves lengthwise, the hoops 1l,secu1red to the bracesbelow the collar, and means for extending the shaft and sleeve,substantially as described.

2. The combination, with the hinged section 2, of the extensible shaft 8and sleeve 9, pivotally connected with the hinged section, the base-shoe3, a rocking or oscillating frame t on the shoe, the braces 10, securedto the rocking frame, the supplementalbraces 12, pivotally connectedwith the shoe, the collar 11, carried by the upper ends of the braces,and means for extending the shaft an d sleeve, substantially asdescribed.

3. The combination, with the hinged sec tion 2, of the extensible shaft8 and sleeve 9, pivotally connected with the hinged section, thebase-shoe 3, the rocking or oscil- In testimony whereof I have hereuntoset my hand.

Witnesses:

T. SIMMONS, EDWARD BOYD.

JOHN CHRISTY.

